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Related Concept Videos

Types of Toxins01:36

Types of Toxins

Humans continually engage with an environment rich in potentially harmful chemicals. These are introduced to our bodies through inhalation, ingestion, or skin contact. These chemicals exist in various forms, such as air and environmental pollutants, agricultural chemicals, organic solvents, and heavy metals.
Air pollutants, primarily gases, pose significant threats to respiratory health, leading to conditions like hypoxia, lung cancer, and in extreme cases, death.
Environmental pollutants like...
Toxic Reactions: Overview01:26

Toxic Reactions: Overview

When toxic substances penetrate the human body, they disseminate to various tissues, undergoing metabolic changes. This process yields reactive metabolites that may covalently bind with specific target molecules, resulting in toxicity.
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Drug toxicity: Drug–Drug Interaction01:30

Drug toxicity: Drug–Drug Interaction

Drug–drug interactions can precipitate toxicity through multiple mechanisms. Absorption interactions alter how drugs enter the body, exemplified when ranitidine increases the absorption of basic drugs, while cholestyramine decreases the levels of propranolol. Protein binding interactions occur when drugs share the same binding sites on plasma proteins. Drugs like aspirin and warfarin, when bound in excess, can lead to increased free drug concentrations, enhancing the potential for...
Toxicity Testing in Animals01:23

Toxicity Testing in Animals

Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...
Drug Toxicity: Dose-Dependent Reactions01:24

Drug Toxicity: Dose-Dependent Reactions

Drug toxicities can be stratified into pharmacological, pathological, or genotoxic based on their mechanisms. The incidence and severity of these toxicities generally increase with the drug's concentration in the body and exposure time.Pharmacological toxicity is evident when the therapeutic effects of drugs overshoot into adverse reactions in a predictable, dose-dependent manner. Central nervous system (CNS) depression from barbiturates is a classic example, with effects escalating from...
Microbial Bioremediation of Plastics01:28

Microbial Bioremediation of Plastics

Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...

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Related Experiment Video

Updated: Jun 16, 2026

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
10:16

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Published on: December 16, 2016

Combined Toxicity Effects and Health Risks of Microplastics and Multiple Pollutants.

Lizhi Wu1, Yuting Zhou2, Mingluan Xing1

  • 1Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China, cdc.zj.cn.

Journal of Toxicology
|June 15, 2026
PubMed
Summary

Microplastics pose global threats to ecosystems and health. This review examines their combined toxic effects with other pollutants, highlighting risks and future research needs.

Keywords:
combined toxicityenvironmental healthmicroplasticspollutants

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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
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Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

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Last Updated: Jun 16, 2026

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis
10:16

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Published on: December 16, 2016

Ecotoxicological Effects of Microplastics on Bird Embryo Development by Hatching without Eggshell
08:11

Ecotoxicological Effects of Microplastics on Bird Embryo Development by Hatching without Eggshell

Published on: August 14, 2021

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris
05:31

Sampling, Sorting, and Characterizing Microplastics in Aquatic Environments with High Suspended Sediment Loads and Large Floating Debris

Published on: July 28, 2018

Area of Science:

  • Environmental Science
  • Toxicology
  • Ecotoxicology

Background:

  • Microplastics are ubiquitous global pollutants with significant environmental and health threats.
  • They exert direct toxicity and influence other pollutants via adsorption and carrier effects.
  • Health risks include cellular toxicity, immune, neurological, endocrine, and reproductive system impairments.

Purpose of the Study:

  • To review the combined toxic effects of microplastics with heavy metals, organic pollutants, plastic additives, antibiotics, and viruses.
  • To explore the mechanisms and influencing factors of these combined exposures.
  • To identify future research directions for a comprehensive understanding of microplastic toxicity.

Main Methods:

  • Literature review synthesizing existing research on microplastic co-toxicity.
  • Analysis of mechanisms including adsorption and carrier effects.
  • Identification of knowledge gaps and future research priorities.

Main Results:

  • Microplastics interact with various pollutants, potentially amplifying toxicity.
  • Combined exposures present complex health risks affecting multiple physiological systems.
  • Adsorption and carrier effects are key mechanisms influencing co-toxicity.

Conclusions:

  • Combined exposure to microplastics and other pollutants poses multifaceted risks.
  • Future research should simulate real-world exposure scenarios and assess long-term health impacts.
  • Enhanced understanding is crucial for mitigating microplastic pollution's ecological and health consequences.